WEARABLE DEVICE, CONTROL METHOD FOR WEARABLE DEVICE, AND CONTROL PROGRAM FOR WEARABLE DEVICE

Abstract

To provide a wearable device capable of determining with high accuracy whether or not the wearable device is attached to a living body or a brace worn on a living body.SOLUTION: A wearable device has a base material, reception quality index acquisition means mounted on the base material, a sensor, and transmission means. The base material is a member for attaching the wearable device to a living body or a brace worn on a living body. The reception quality index acquisition means receives a GPS signal and acquires a reception quality index of the GPS signal. The sensor outputs a signal that depends on the positional relationship between the living body or the brace worn on the living body and the sensor itself. The transmission means transmits the reception quality index and the output of the sensor to attachment determination means for determining whether or not the wearable device is attached to the living body or the brace worn on the living body based on the reception quality index and the output of the sensor.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a wearable device, a control method for a wearable device, and a control program for a wearable device. [Background technology]

[0002] In recent years, wearable devices are increasingly being used for purposes such as monitoring people. For example, if the person being monitored wears a wearable device equipped with a Global Positioning System (GPS), the location of that person can be identified. However, if the person being monitored removes the wearable device, the location cannot be identified. To address this issue, it has been proposed to provide wearable devices with a function for detecting whether the device is attached or detached.

[0003] For example, Patent Document 1 discloses a wearable terminal equipped with a position sensor using GPS and a detection unit that detects whether the terminal is worn by a user. This detection unit includes an acceleration sensor or a temperature sensor. When an acceleration sensor is used, it is possible to determine that the terminal is worn when the acceleration is large, and that the terminal is not worn when the acceleration is zero. When a temperature sensor is used, it is possible to measure the temperature of the arm, for example, and determine that the terminal is worn if the arm temperature is measured, and determine that the terminal is not worn if the temperature is other than the above. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2017-151995 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, the technology of Patent Document 1 has a problem that false detection may occur. For example, when the user (the person being watched) is stationary, the acceleration of the wearable device becomes zero, and it may be erroneously determined that the wearable device is not being worn. In addition, when a temperature sensor is used, for example, if the air temperature or the temperature of an object in contact with the wearable device is close to body temperature, it may be erroneously determined that the wearable device is being worn even if it is removed.

[0006] The present invention has been made in consideration of the above-mentioned problems, and aims to provide a wearable device that can determine with a high degree of accuracy whether or not the wearable device is attached to a living body or to an appliance worn by the living body. [Means for solving the problem]

[0007] The wearable device comprises a base material attached to a living body or an appliance worn on the living body, a reception quality index acquisition means mounted on the base material for receiving a GPS signal and acquiring a reception quality index of the GPS signal, a sensor mounted on the base material for outputting a signal dependent on the positional relationship between the living body or the appliance and the sensor itself, and a transmission means for transmitting the reception quality index and the output of the sensor to a wearing determination means for determining whether the wearable device is worn on the living body or the appliance based on the reception quality index and the output of the sensor.

[0008] In addition, the wearable device control method of the present invention has a wearable device attached to a living organism or an ornament worn on the living organism, receives a GPS signal, acquires a reception quality index of the GPS signal, outputs a signal from a sensor that depends on the positional relationship between the living organism or the ornament and the wearable device itself, and transmits the reception quality index and the output of the sensor to a wearing determination means that determines whether the wearable device is worn on the living organism or the ornament based on the reception quality index and the output of the sensor.

[0009] In addition, the control program for the wearable device of the present invention causes a wearable device attached to a living organism or to an ornament worn on the living organism to perform the following processes: receiving a GPS signal, acquiring a reception quality index of the GPS signal, acquiring an output from a sensor that outputs a signal that depends on the positional relationship between the living organism or the ornament and the wearable device itself, and transmitting the reception quality index and the output of the sensor to a wearing determination means that determines whether or not the wearable device is worn on the living organism or the ornament based on the reception quality index and the output of the sensor. Effect of the Invention

[0010] An effect of the present invention is to provide a wearable device that can determine with a high degree of accuracy whether or not the wearable device is attached to a living body or to an appliance worn by the living body. [Brief description of the drawings]

[0011] [Figure 1] FIG. 1 is a block diagram showing a wearable device according to a first embodiment. [Diagram 2] FIG. 11 is a plan view showing a wearable device according to a second embodiment. [Diagram 3] FIG. 13 is a plan view showing a modified example of the wearable device of the second embodiment. [Figure 4] FIG. 11 is a perspective view showing a worn state of the wearable device of the second embodiment. [Diagram 5] 11 is a cross-sectional view showing a worn state of a wearable device according to a second embodiment. FIG. [Figure 6] 11 is a cross-sectional view showing a state in which the wearable device of the second embodiment is being removed. FIG. [Figure 7] 11 is a cross-sectional view showing a state in which the wearable device of the second embodiment is detached. FIG. [Figure 8] FIG. 13 is a plan view illustrating an example of a wearable device according to a third embodiment. [Figure 9] FIG. 11 is a cross-sectional view showing a worn state of the wearable device of the third embodiment. [Figure 10] FIG. 11 is a cross-sectional view showing a state in which the wearable device of the third embodiment is not worn. [Figure 11] FIG. 13 is a side view showing a worn state of the wearable device of the fourth embodiment. [Figure 12] 13A to 13C are side views showing the operation of removing the wearable device of the fourth embodiment. [Figure 13] FIG. 13 is a side view showing the wearable device of the fourth embodiment in an unworn state. [Figure 14] FIG. 13 is a side view showing a modified example of the wearable device of the fourth embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] Hereinafter, the embodiments of the present invention will be described in detail with reference to the drawings. However, the embodiments described below are limited in a technically preferable manner for carrying out the present invention, but the scope of the invention is not limited to the following. Note that the same components in each drawing are given the same numbers, and the description may be omitted.

[0013] (First embodiment) 1 is a block diagram showing a wearable device 10 according to the present embodiment. The wearable device 10 includes a base material 1, a GPS reception quality index acquisition means 2 mounted on the base material, a sensor 3, and a transmission means 4.

[0014] The substrate 1 is a member for mounting the wearable device 10 on a living body or an orthosis 20 worn by the living body. The GPS reception quality index acquisition means 2 receives a GPS signal and acquires a reception quality index of the GPS signal. For example, CNR (Carrier-to-noise Ratio) or SNR (Signal-to-Noise ratio) can be used as the reception quality index. CNR is expressed as CNR=C / N, where C is the power of the carrier and N is the power of the reception noise. SNR is expressed as SNR=S / N, where S is the power of the signal and N is the power of the reception noise. For both CNR and SNR, the higher the CNR, the better the quality.

[0015] The sensor 3 outputs a signal that depends on the positional relationship between the sensor 3 and the living body or the prosthesis 20 worn by the living body. The sensor 3 used has an output that changes depending on the distance from the living body, for example, the output becomes smaller or larger when it is closer to the living body, or the signal-to-noise ratio changes.

[0016] The transmission means 4 transmits the reception quality index and the output of the sensor 3 to a wearing determination means 5 which determines whether or not the wearable device 10 is worn on a living body or on an ornament 20 worn on the living body based on the reception quality index and the output of the sensor 3.

[0017] When the wearable device 10 is attached to a living body or to an ornament 20 worn by the living body, the living body interferes with reception of the GPS signal, and the reception quality index deteriorates. Conversely, when the wearable device 10 is not attached to a living body or to an ornament 20 worn by the living body, the reception condition of the GPS signal improves, and the reception quality index improves. For this reason, a predetermined threshold is set for the reception quality index, and if the reception quality index is better than the predetermined threshold, it can be determined that the wearable device 10 is not attached to a living body.

[0018] On the other hand, the reception quality index may deteriorate due to factors other than the attachment of the device to the living body, such as entering a building, going underground, etc. Therefore, if the deterioration of the reception quality index is used to determine that the device is attached, it may be determined erroneously.

[0019] The output of the sensor 3 changes depending on the positional relationship between the living body or the orthosis 20 worn by the living body and the sensor 3. By setting a second threshold value for this output and comparing the output with the second threshold value, it is possible to determine whether the wearable device 10 is attached to or detached from the living body or the orthosis 20 worn by the living body.

[0020] On the other hand, the output of the sensor 3 may be the same whether it is attached to the living body or to the equipment 20 worn by the living body or whether it is detached. This condition varies depending on the type of sensor 3, but for example, if the sensor 3 is a temperature sensor, and the outside air temperature is close to the body temperature of the living body or the wearable device 10 is in contact with an object that is close to the body temperature of the living body, it may determine that the wearer is wearing the device even though the wearer is not actually wearing the device.

[0021] Therefore, the wearing determination means 5 of this embodiment determines whether the device is worn or not based on both the reception quality index of the GPS signal and the output of the sensor 3. By determining whether the device is worn or not based on multiple indexes with different variable factors, the probability of erroneous determination can be reduced.

[0022] As described above, in this embodiment, whether or not a wearable device is attached to a living body or an accessory worn by a living body is determined based on both the reception quality index of the GPS signal and the output of the sensor. Therefore, a more accurate determination can be made compared to the method of determining whether or not a device is attached based only on the output of the sensor, as in Patent Document 1.

[0023] Second Embodiment The wearable device of the first embodiment can take various forms in order to be attached to a living body. In this embodiment, a specific example in which a wristband is used as the base material will be described.

[0024] 2 is a plan view showing a wearable device 100 in which a wristband 110 is used as a base material and a GPS signal receiving unit 120, a sensor 130, and a data transmitting unit 140 are mounted on the wristband 110. The wristband 110 is an example of the base material 1 of the first embodiment, the GPS signal receiving unit 120 is an example of the GPS reception quality index acquiring means 2, the sensor 130 is an example of the sensor 3, and the data transmitting unit 140 is an example of the transmitting means 4. The wearing determination server 200 is an example of the wearing determination means 5. A hook-and-loop fastener 111 and a hook-and-loop fastener 112 are disposed on both ends of the wristband 110, respectively. When the wristband 110 is wrapped around the arm, the hook-and-loop fastener 111 and the hook-and-loop fastener 112 are adhered to each other to fasten the wristband 110 to the arm.

[0025] The GPS signal receiving unit 120 receives a GPS signal and obtains a reception quality index of the GPS signal. For example, CNR or SNR can be used as the reception quality index. For simplicity, the following description will be represented by CNR. The GPS receiving unit 120 may also have a function of calculating position information. The GPS signal receiving unit 120 can be, for example, an integrated circuit having the above function.

[0026] The sensor 130 outputs a signal that depends on the positional relationship between the living body (here, the arm) and the sensor 130 itself. The sensor 130 used is one whose output changes depending on the distance from the living body, for example, the closer it is to the living body, the smaller the output becomes, or the larger the output becomes, or the signal-to-noise ratio changes. Specific examples of sensors will be described later.

[0027] The data transmission unit 140 transmits the CNR acquired by the GPS signal receiving unit 120 and the output of the sensor 130 to the wearing determination server 200. The wearing determination server 200 is a computer having a processor, memory, etc., and determines whether or not the wearable device 100 is worn on a living body or on an appliance worn by the living body, based on the CNR and the output of the sensor 130. The wearing determination server 200 may have a function of receiving position information from the wearable device 100 or receiving GPS data from the wearable device 100 to identify the position of the wearable device 100.

[0028] 2 shows an example in which the wearing determination server 200 is located outside the wearable device 100 and the data transmission unit 140 transmits data to the wearing determination server 200, but the wearing determination function may be implemented as a chip and implemented in the wearable device 100. FIG. 3 is a plan view showing a wearable device 100a showing an example in which the wearing determination unit 150 implemented as a chip is implemented in a wristband 110. As is clear from the above explanation, the function as a wearing determination system is the same whether the wearing determination function is in an external server or in a chip implemented in the wearable device 100. For this reason, unless otherwise specified, the following explanation will be given using the wearing determination unit implemented as a chip, representing both.

[0029] Fig. 4 is a perspective view showing an example of a wristband-type wearable device 100a worn on an arm 300. Fig. 5 is a cross-sectional view showing the state in which the wearable device 100a is worn on the arm 300. As shown in Fig. 5, the wristband 110 is wrapped around the arm so that the sensor surface 130a of the sensor 130 faces the arm 300, and the wearable device 100a is fixed to the arm 300 using hook-and-loop fasteners 111 and 112 (not shown).

[0030] 6 is a cross-sectional view showing a state in which the wearable device 100a is in the process of being removed from the arm 300. In this state, the sensor surface 130a of the sensor 130 is separated from the arm 300.

[0031] FIG. 7 is a cross-sectional view showing a state in which the wearable device 100a is completely removed from the arm 300.

[0032] The sensor 130 may be one whose output changes significantly between the state in which the wearable device 100a is worn on the arm 300 in Fig. 5 and the state in which the wearable device 100a is separated from the arm 300 in Fig. 6 or in Fig. 7. Hereinafter, the wearing determination operation of the wearable device 100a will be described using a specific example.

[0033] (Example 1) Wearable device 100a of specific example 1 uses an illuminance sensor as sensor 130. Note that although it is referred to as an illuminance sensor here, it refers to a general optical sensor that outputs a signal according to the amount of received light, such as an image sensor or a brightness sensor. When an illuminance sensor is used as sensor 130, sensor 130 is worn so that sensor surface 130a of sensor 130 faces arm 300, as shown in Fig. 5. Note that while sensor surface 130a is depicted in close contact with arm 300 in Fig. 5, in the case of an illuminance sensor, there may be a gap between sensor surface 130a and arm 300.

[0034] In this way, when wearable device 100a is worn on the arm, the light receiving surface (sensor surface 130a) of the illuminance sensor faces arm 300 and is covered by wristband 110. Therefore, almost no external light (natural light) is incident on the sensor surface of the illuminance sensor, and the output of the illuminance sensor becomes extremely small. Also, because arm 300 interferes with reception, the CNR acquired by GPS signal receiver 120 becomes small.

[0035] 6 or 7, light is incident on the sensor surface 130a of the illuminance sensor, increasing the output. Also, the GPS signal receiving unit 120 can more easily receive the GPS signal, increasing the CNR.

[0036] Based on the above operation, threshold values ​​can be set for the sensor output and CNR, and, for example, when both the sensor output and CNR are below the threshold value, it can be determined that the device is attached, and when both the sensor output and CNR are above the threshold value, it can be determined that the device is detached.

[0037] (Example 2) Wearable device 100a of specific example 2 uses a temperature sensor as sensor 130. In this case, as shown in Fig. 5, sensor 130 is worn so that the temperature measuring portion is in contact with arm 300. In this way, when wearable device 100a is worn on the arm, the output of the temperature sensor is close to body temperature, and the CNR of the GPS signal is small. On the other hand, when wearable device 100a is removed, the output of the temperature sensor is often in a range different from normal body temperature, and the CNR of the GPS signal is large.

[0038] As mentioned above, the output of the temperature sensor is the same as when it is worn, even when it is not worn, when the environmental temperature is close to the body temperature of the living body. Also, the CNR may decrease in an environment where it is difficult to receive a GPS signal, even when the sensor is not worn. Therefore, by combining the output of the temperature sensor and the CNR to determine whether the sensor is worn or not, the probability of erroneous determination, which occurs when each is used alone, can be reduced.

[0039] For example, when the wearable device 100a is not actually worn, the output of the temperature sensor is within a predetermined range, and the CNR is equal to or greater than a threshold value, the temperature sensor alone will erroneously determine that the device is worn, but since the CNR is equal to or greater than the threshold value, it is possible to identify that the device is not worn. Also, when the wearable device 100a is not actually worn, the output of the temperature sensor is outside the predetermined range, and the CNR is less than the threshold value, the CNR alone will erroneously determine that the device is worn, but since the output of the temperature sensor is outside the range, it is possible to identify that the device is not worn. However, it is not possible to completely prevent erroneous determinations. For example, when the wearable device 100a is not actually worn, the wearable device 100a is underground, and the environmental temperature is close to body temperature, the output of the temperature sensor is within a predetermined range, and the CNR is less than the threshold value, it is erroneously determined that the device is worn. However, as described above, by combining the temperature sensor and the CNR, it is possible to reduce the probability of erroneous determination compared to when each is used alone.

[0040] (Example 3) Wearable device 100a of specific example 3 uses a humidity sensor as sensor 130. In this case, as shown in Fig. 5, sensor 130 is worn so that its humidity measuring unit faces arm 300. In this way, when wearable device 100a is worn on the arm, the humidity sensor outputs a high humidity, and the CNR of the GPS signal is low. On the other hand, when wearable device 100a is removed, the output of the humidity sensor is often low, and the CNR of the GPS signal is high.

[0041] However, in the case of humidity, since the environmental humidity can be 100%, using the humidity sensor alone to determine whether the device is worn or not can easily result in erroneous judgments, but it can be used as a supplementary measure. For example, if the CNR is below a threshold and the output of the humidity sensor is equal to or greater than the threshold, it can be determined that there is a high possibility that the device is worn.

[0042] (Example 4) The wearable device 100a of the fourth specific example uses an acceleration sensor or a gyro sensor as the sensor 130. In this case, the acceleration sensor or the gyro sensor may face either the arm side or the outside. When the acceleration sensor or the gyro sensor is used, the arm movement can be estimated from the output. If the estimated movement matches the normal movement of the living body, it is highly likely that the wearable device 100a is being worn, and if the movement is far from the normal movement or the living body is stationary, it is highly likely that the wearable device 100a has been removed. By combining this information with the CNR of the GPS signal, it is possible to accurately determine whether the wearable device 100a is being worn or not.

[0043] (Example 5) Wearable device 100a of specific example 6 uses a sound sensor as sensor 130. In this case, as shown in FIG. 5, sensor 130 is worn so that the sound measuring unit faces arm 300. In this way, when wearable device 100a is worn on the arm, the output of the sound sensor is small and the CNR of the GPS signal is small. On the other hand, when wearable device 100a is removed, the output of the sound sensor is often large and the CNR of the GPS signal is large. Therefore, it is possible to accurately determine whether wearable device 100a is worn or not based on the output and CNR of the sound sensor.

[0044] As described above, according to this embodiment, a wristband-type wearable device is used, and the CNR of the GPS signal and the outputs of various sensors are combined to accurately determine whether the wearable device is being worn or not.

[0045] (Third embodiment) In this embodiment, a wearable device having a patch-type substrate will be described. Fig. 8 is a plan view showing a wearable device 400 in which a GPS signal receiving unit 420, an illuminance sensor 430, and a wearing determination unit 450 are mounted on a patch 410 having a substrate 411 and an adhesive layer 412. In the example of Fig. 8, an illuminance sensor 430 is used as the sensor. The illuminance sensor 430 is disposed on the substrate 411 side of a light-transmitting portion 431 provided on the substrate 411.

[0046] 9 is a cross-sectional view showing an example in which wearable device 400 is attached to living body 310. Wearable device 400 is fixed to living body 310 by adhesive 412 so that light receiving surface 430a of illuminance sensor 430 faces living body 310. In this state, light receiving surface 430a of illuminance sensor 430 faces living body 310 and is surrounded by base material 411, so that almost no light is incident on light receiving surface 430a. This reduces the output of illuminance sensor 430. In addition, living body 310 interferes with reception of GPS signals, so the CNR output by GPS signal receiver 420 is reduced.

[0047] 10 is a cross-sectional view that illustrates a state in which wearable device 400 is detached from living body 310. The output of illuminance sensor 430 is large, and the CNR output by GPS signal receiving section 420 is large.

[0048] Although an example in which an illuminance sensor is used as the sensor has been described above, it is also possible to use a temperature sensor, a humidity sensor, an acceleration sensor, a gyro sensor, or a sound sensor, as in the second embodiment.

[0049] As described above, according to this embodiment, even in the case of a patch-type wearable device, it is possible to accurately determine whether or not a wearable device is attached to a living body.

[0050] (Fourth embodiment) In this embodiment, an insole-type wearable device in which the base material is a shoe insole will be described. Fig. 11 is a side view showing a wearable device 500 in which a GPS signal receiving unit 520, an illuminance sensor 530, and a wearing determination unit 550 are mounted on an insole 510. The illuminance sensor 530 is arranged so that its light receiving surface faces the bottom surface of the shoe 320. Moreover, above the light receiving surface of the illuminance sensor (the bottom surface side of the shoe 320) is a light transmitting portion 531. The light transmitting portion 531 may be an opening with nothing therein.

[0051] 11, when wearable device 500 is attached to the bottom surface of shoe 320, the light receiving surface of the illuminance sensor faces the bottom surface of shoe 320 and is surrounded by insole 510, so that almost no light from outside is incident on the light receiving surface. This reduces the output of illuminance sensor 530. Furthermore, the CNR output by GPS signal receiver 520 is small when the user is wearing shoes 320 and is large when shoes 320 are removed.

[0052] Fig. 12 is a side view showing wearable device 500 being taken out of shoe 320 by finger 330. As shown in Fig. 12, when wearable device 500 moves out of shoe 320, the amount of light incident on the light receiving surface of the illuminance sensor increases as the wearer moves. This increases the output of illuminance sensor 530. In addition, the CNR is larger because the user's foot is farther away from GPS signal receiver 520.

[0053] 13 is a side view showing a state in which wearable device 500 is completely removed from shoe 320. In this case, external light is incident on the light receiving surface of illuminance sensor 530, so the output is large. Also, since the foot is away from GPS signal receiving unit 520, the CNR output by GPS signal receiving unit 520 is large. Based on this phenomenon, it can be determined with high accuracy whether wearable device 500 is attached to the bottom surface of shoe 320 as an orthosis worn by a living body, or has been removed.

[0054] In the above description, the shoes 320 are not worn by the living body (user), but in the case of shoes 320, the user may be wearing or removing the shoes 320. When the user is wearing shoes 320, the CNR of the GPS signal is significantly smaller than when the user is not wearing shoes 320. On the other hand, the output of the illuminance sensor 530 does not change much.

[0055] From the above relationship, it is possible to distinguish with high accuracy between a state in which the wearable device 500 is attached to the shoe 320 and the user is wearing the shoe 320, and a state in which the wearable device 500 is attached to the shoe 320 and the user has taken off the shoe 320. Furthermore, when the user has taken off the shoe 320, it is possible to distinguish with high accuracy between a state in which the wearable device 500 is attached to the shoe 320 and a state in which the wearable device 500 has been removed from the shoe 320.

[0056] For example, when the CNR is less than the threshold and the output of the illuminance sensor 530 is less than the threshold, it is determined that the shoe is being worn. On the other hand, when the CNR is equal to or greater than the threshold and the output of the illuminance sensor 530 is less than the threshold, it is determined that the user has taken off shoes 320 and that the wearable device 500 is being worn on shoes 320. An example of a scene in which the user has taken off shoes 320 is when the user is in a room where shoes are not allowed, which is not abnormal.

[0057] Also, for example, when the CNR is equal to or greater than the threshold value and the output of the illuminance sensor 530 is equal to or greater than the threshold value, it is determined that the user has taken off the shoes 320 and the wearable device 500 has been removed from the shoes 320. A scene corresponding to this may be, for example, a case in which the user removes the wearable device 500 from the shoes 320 in order to hide his or her location. This is abnormal behavior from the perspective of a person watching over the user. The person watching over the user can detect this abnormal behavior and take necessary measures.

[0058] In the above description, the illuminance sensor 530 is used as the sensor, but a temperature sensor, a humidity sensor, etc. can also be used as the sensor. These sensors obtain information from a living body (the user's foot). Therefore, when using these sensors, it is preferable to place the sensor 532 in the insole 510 so that the sensor 532 faces the sole of the foot, as in the wearable device 501 shown in FIG. 14.

[0059] As described above, according to the present embodiment, in an insole-type wearable device, it is possible to accurately determine whether the wearable device is attached to a living body or not. Also, it is possible to accurately determine whether the wearable device is attached to a shoe or detached.

[0060] The scope of the present invention also includes a program for causing a computer to execute the processes of the first to fourth embodiments described above, and a recording medium storing the program. As the recording medium, for example, a magnetic disk, a magnetic tape, an optical disk, a magneto-optical disk, a semiconductor memory, etc. can be used.

[0061] The present invention has been described above by taking the above-mentioned embodiment as an exemplary example. However, the present invention is not limited to the above-mentioned embodiment. That is, the present invention can be applied in various aspects that can be understood by a person skilled in the art within the scope of the present invention. [Explanation of symbols]

[0062] 1 Base material 2. Means of obtaining GPS reception quality index 3 Sensors 4 Transmission Method 5. Wearing judgment means 10, 100, 400, 500 Wearable Devices 110 Wristbands 120 GPS signal receiver 130 Sensors 140 Data transmission unit 150 Wearing Judgment Section 200 Wearing judgment server 300 Arms 310 Living organisms 320 Shoes 330 fingers

Claims

1. A substrate attached to a living body or an appliance worn by a living body; a reception quality index acquiring means mounted on the base material, configured to receive a GPS signal and acquire a reception quality index of the GPS signal; A sensor mounted on the base material and outputting a signal depending on a positional relationship between the sensor and the living body or the prosthesis; a transmission means for transmitting the reception quality index and the output of the sensor to a wearing determination means for determining whether or not a wearable device is worn on the living body or the orthosis based on the reception quality index and the output of the sensor; having the sensor is a humidity sensor, The mounting determination means When the reception quality index becomes better than a predetermined threshold, it is determined that the wearable device has been separated from the living body; When the reception quality index is worse than the predetermined threshold and the output of the humidity sensor is equal to or greater than a second threshold, it is determined that the wearable device is attached to the living body or the prosthesis. A wearable device characterized by:

2. The mounting determination means is mounted on the base material. The wearable device according to claim 1 .

3. The sensor is an optical sensor that outputs a signal that depends on the amount of light incident thereon, the wearable device is attached to the outfit, and when the optical sensor is attached to the outfit, external light that is incident on the optical sensor is blocked, The mounting determination means When the reception quality index is better than or equal to the predetermined threshold and the amount of light detected by the optical sensor is equal to or greater than a predetermined second threshold, it is determined that the wearable device is not attached to the living body and is also removed from the orthosis; When the reception quality index is better than or equal to the predetermined threshold and the amount of light detected by the optical sensor is less than the second predetermined threshold, it is determined that the wearable device is not attached to the living body but is attached to the orthosis. The wearable device according to claim 1 .

4. When the reception quality index is worse than the predetermined threshold and the amount of light detected by the optical sensor is less than the second threshold, it is determined that the wearable device is attached to the orthosis and that the orthosis is attached to the living body. The wearable device according to claim 3 .

5. A wearable device attached to a living body or an orthosis worn by a living body, Receive GPS signals, Obtaining a reception quality indicator of the GPS signal; A signal depending on a positional relationship between the living body or the prosthetic device and the user is output from a sensor; A control method for a wearable device, comprising: determining whether or not the wearable device is attached to the living body or the orthosis based on the reception quality index and an output of the sensor, the control method comprising: the sensor is a humidity sensor, When the reception quality index becomes better than a predetermined threshold, it is determined that the wearable device has been separated from the living body; When the reception quality index is worse than the predetermined threshold and the output of the humidity sensor is equal to or greater than a second threshold, it is determined that the wearable device is attached to the living body or the prosthesis. A method for controlling a wearable device comprising the steps of:

6. A wearable device attached to a living body or an orthosis worn on the living body, receiving a GPS signal; obtaining a reception quality index of the GPS signal; A process of acquiring an output from a sensor that outputs a signal depending on a positional relationship between the living body or the prosthetic device and the user; determining whether the wearable device is attached to the living body or the orthosis based on the reception quality index and the output of the sensor; A control program for a wearable device that executes the sensor is a humidity sensor, In the process of determining whether the wearable device is attached to the living body or the prosthesis, determining that the wearable device has moved away from the living body when the reception quality index becomes better than a predetermined threshold; determining that the wearable device is attached to the living body or the orthosis when the reception quality index is worse than the predetermined threshold and the output of the humidity sensor is equal to or greater than a second threshold; causing the wearable device to execute A control program for a wearable device comprising:

Images